National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Heat Builds in the West; Extremely Critical Fire Weather in the Northwest

A heat wave over the Southwest will intensify this week, peaking and expanding into the Intermountain West and northern High Plains this weekend. Critical to extremely critical fire weather conditions are forecast from the Northwest and the northern Great Basin this weekend. Particularly Dangerous Situation Red Flag Warnings have been issued. Read More >

Current conditions at

DIABLO GRANDE (DBLC1)

Lat: 37.32927°NLon: 121.29538°WElev: 1861.0ft.

NA

95°F

35°C

Humidity 17%
Wind Speed ENE 8 MPH
Barometer NA
Dewpoint 44°F (7°C)
Visibility NA
Heat Index91°F (33°C)
Last update 31 Jul 06:00 PM PDT
Extended Forecast for

13 Miles NE Mount Hamilton CA

  • Tonight

    Tonight: Clear, with a low around 64. West southwest wind around 7 mph.

    Low: 64 °F

    Clear

  • Saturday

    Saturday: Sunny, with a high near 92. West wind 5 to 8 mph becoming north northeast in the afternoon.

    High: 92 °F

    Sunny

  • Saturday Night

    Saturday Night: Patchy smoke between 11pm and midnight. Mostly clear, with a low around 67. West southwest wind 5 to 7 mph.

    Low: 67 °F

    Patchy Smoke
    then Mostly
    Clear

  • Sunday

    Sunday: Sunny, with a high near 93. Light and variable wind becoming north northwest 5 to 7 mph in the afternoon.

    High: 93 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 68. Northwest wind around 6 mph becoming light and variable after midnight.

    Low: 68 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 94.

    High: 94 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 68.

    Low: 68 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 92.

    High: 92 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 65.

    Low: 65 °F

    Clear

Detailed Forecast

Tonight
Clear, with a low around 64. West southwest wind around 7 mph.
Saturday
Sunny, with a high near 92. West wind 5 to 8 mph becoming north northeast in the afternoon.
Saturday Night
Patchy smoke between 11pm and midnight. Mostly clear, with a low around 67. West southwest wind 5 to 7 mph.
Sunday
Sunny, with a high near 93. Light and variable wind becoming north northwest 5 to 7 mph in the afternoon.
Sunday Night
Clear, with a low around 68. Northwest wind around 6 mph becoming light and variable after midnight.
Monday
Sunny, with a high near 94.
Monday Night
Clear, with a low around 68.
Tuesday
Sunny, with a high near 92.
Tuesday Night
Clear, with a low around 65.
Wednesday
Sunny, with a high near 91.
Wednesday Night
Clear, with a low around 66.
Thursday
Sunny, with a high near 91.
Thursday Night
Clear, with a low around 67.
Friday
Sunny, with a high near 91.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
13 Miles NE Mount Hamilton CA
 37.49°N 121.48°W (Elev. 2799 ft)
Last Update:
2:00 pm PDT Jul 31, 2026
Forecast Valid:
6pm PDT Jul 31, 2026-6pm PDT Aug 7, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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National Digital Forecast Database Weather Element Forecast

Chance of Precipitation